CZC offers two front sights for the Bull Shadow. The fiber optic rod in 1.5 and 1 mm. The blade widths are the same. Also look closely at how the front sight is mounted with the barrel removed. There is a “vertical” hole that goes into the very front (muzzle) end. There is a tiny roll pin that is in there... So it’s not just a drift out to remove front sight. I also wanted to get a thinner front blade or wider rear notch sight. I was used to the CGW EZ sights. Now.... I’m very glad I didn’t make any sight changes.
I still have the new front sight sitting on my desk that I was going to thin...and won’t now.
So bottom line before you go to remove the front sight look closely (from inside the slide) at how it’s mounted.